[KEP-3085] Promote PodReadyToStartContainers to beta in 1.29

pkg/features/kube_features.go

@@ -674,8 +674,9 @@ const (
 	// Set pod completion index as a pod label for Indexed Jobs.
 	PodIndexLabel featuregate.Feature = "PodIndexLabel"
 
-	// owner: @ddebroy
+	// owner: @ddebroy, @kannon92
 	// alpha: v1.25
+	// beta: v1.29
 	//
 	// Enables reporting of PodReadyToStartContainersCondition condition in pod status after pod
 	// sandbox creation and network configuration completes successfully
@@ -1132,7 +1133,7 @@ var defaultKubernetesFeatureGates = map[featuregate.Feature]featuregate.FeatureS
 
 	PodDisruptionConditions: {Default: true, PreRelease: featuregate.Beta},
 
-	PodReadyToStartContainersCondition: {Default: false, PreRelease: featuregate.Alpha},
+	PodReadyToStartContainersCondition: {Default: true, PreRelease: featuregate.Beta},
 
 	PodHostIPs: {Default: false, PreRelease: featuregate.Alpha},
 

pkg/kubelet/kubelet_pods_test.go

@@ -3367,7 +3367,7 @@ func Test_generateAPIPodStatus(t *testing.T) {
 				LastTransitionTime: normalized_now,
 			},
 			expectedPodReadyToStartContainersCondition: v1.PodCondition{
-				Type:   kubetypes.PodReadyToStartContainers,
+				Type:   v1.PodReadyToStartContainers,
 				Status: v1.ConditionTrue,
 			},
 		},
@@ -3408,7 +3408,7 @@ func Test_generateAPIPodStatus(t *testing.T) {
 				},
 			},
 			expectedPodReadyToStartContainersCondition: v1.PodCondition{
-				Type:   kubetypes.PodReadyToStartContainers,
+				Type:   v1.PodReadyToStartContainers,
 				Status: v1.ConditionTrue,
 			},
 		},
@@ -3448,7 +3448,7 @@ func Test_generateAPIPodStatus(t *testing.T) {
 				},
 			},
 			expectedPodReadyToStartContainersCondition: v1.PodCondition{
-				Type:   kubetypes.PodReadyToStartContainers,
+				Type:   v1.PodReadyToStartContainers,
 				Status: v1.ConditionTrue,
 			},
 		},
@@ -3489,7 +3489,7 @@ func Test_generateAPIPodStatus(t *testing.T) {
 				},
 			},
 			expectedPodReadyToStartContainersCondition: v1.PodCondition{
-				Type:   kubetypes.PodReadyToStartContainers,
+				Type:   v1.PodReadyToStartContainers,
 				Status: v1.ConditionFalse,
 			},
 		},
@@ -3536,7 +3536,7 @@ func Test_generateAPIPodStatus(t *testing.T) {
 				Message: "test",
 			},
 			expectedPodReadyToStartContainersCondition: v1.PodCondition{
-				Type:   kubetypes.PodReadyToStartContainers,
+				Type:   v1.PodReadyToStartContainers,
 				Status: v1.ConditionFalse,
 			},
 		},
@@ -3590,7 +3590,7 @@ func Test_generateAPIPodStatus(t *testing.T) {
 				Message: "test",
 			},
 			expectedPodReadyToStartContainersCondition: v1.PodCondition{
-				Type:   kubetypes.PodReadyToStartContainers,
+				Type:   v1.PodReadyToStartContainers,
 				Status: v1.ConditionFalse,
 			},
 		},
@@ -3631,7 +3631,7 @@ func Test_generateAPIPodStatus(t *testing.T) {
 				},
 			},
 			expectedPodReadyToStartContainersCondition: v1.PodCondition{
-				Type:   kubetypes.PodReadyToStartContainers,
+				Type:   v1.PodReadyToStartContainers,
 				Status: v1.ConditionTrue,
 			},
 		},
@@ -3687,7 +3687,7 @@ func Test_generateAPIPodStatus(t *testing.T) {
 				},
 			},
 			expectedPodReadyToStartContainersCondition: v1.PodCondition{
-				Type:   kubetypes.PodReadyToStartContainers,
+				Type:   v1.PodReadyToStartContainers,
 				Status: v1.ConditionTrue,
 			},
 		},
@@ -3747,7 +3747,7 @@ func Test_generateAPIPodStatus(t *testing.T) {
 				},
 			},
 			expectedPodReadyToStartContainersCondition: v1.PodCondition{
-				Type:   kubetypes.PodReadyToStartContainers,
+				Type:   v1.PodReadyToStartContainers,
 				Status: v1.ConditionTrue,
 			},
 		},

pkg/kubelet/status/generate.go

@@ -247,12 +247,12 @@ func GeneratePodReadyToStartContainersCondition(pod *v1.Pod, podStatus *kubecont
 	// fresh sandbox and configure networking for the sandbox.
 	if !newSandboxNeeded {
 		return v1.PodCondition{
-			Type:   kubetypes.PodReadyToStartContainers,
+			Type:   v1.PodReadyToStartContainers,
 			Status: v1.ConditionTrue,
 		}
 	}
 	return v1.PodCondition{
-		Type:   kubetypes.PodReadyToStartContainers,
+		Type:   v1.PodReadyToStartContainers,
 		Status: v1.ConditionFalse,
 	}
 }

pkg/kubelet/status/generate_test.go

@@ -26,7 +26,6 @@ import (
 	v1 "k8s.io/api/core/v1"
 	runtimeapi "k8s.io/cri-api/pkg/apis/runtime/v1"
 	kubecontainer "k8s.io/kubernetes/pkg/kubelet/container"
-	kubetypes "k8s.io/kubernetes/pkg/kubelet/types"
 	"k8s.io/utils/pointer"
 )
 
@@ -615,7 +614,7 @@ func TestGeneratePodReadyToStartContainersCondition(t *testing.T) {
 		},
 	} {
 		t.Run(desc, func(t *testing.T) {
-			test.expected.Type = kubetypes.PodReadyToStartContainers
+			test.expected.Type = v1.PodReadyToStartContainers
 			condition := GeneratePodReadyToStartContainersCondition(test.pod, test.status)
 			require.Equal(t, test.expected.Type, condition.Type)
 			require.Equal(t, test.expected.Status, condition.Status)

pkg/kubelet/status/status_manager.go

@@ -634,7 +634,7 @@ func (m *manager) updateStatusInternal(pod *v1.Pod, status v1.PodStatus, forceUp
 	updateLastTransitionTime(&status, &oldStatus, v1.PodInitialized)
 
 	// Set PodReadyToStartContainersCondition.LastTransitionTime.
-	updateLastTransitionTime(&status, &oldStatus, kubetypes.PodReadyToStartContainers)
+	updateLastTransitionTime(&status, &oldStatus, v1.PodReadyToStartContainers)
 
 	// Set PodScheduledCondition.LastTransitionTime.
 	updateLastTransitionTime(&status, &oldStatus, v1.PodScheduled)

pkg/kubelet/types/constants.go

@@ -38,12 +38,3 @@ const (
 	LimitedSwap   = "LimitedSwap"
 	UnlimitedSwap = "UnlimitedSwap"
 )
-
-// Alpha conditions managed by Kubelet that are not yet part of the API. The
-// entries here should be moved to staging/src/k8s.io.api/core/v1/types.go
-// once the feature managing the condition graduates to Beta.
-const (
-	// PodReadyToStartContainers pod sandbox is successfully configured and
-	// the pod is ready to launch containers.
-	PodReadyToStartContainers = "PodReadyToStartContainers"
-)

pkg/kubelet/types/pod_status.go

@@ -38,7 +38,7 @@ func PodConditionByKubelet(conditionType v1.PodConditionType) bool {
 		}
 	}
 	if utilfeature.DefaultFeatureGate.Enabled(features.PodReadyToStartContainersCondition) {
-		if conditionType == PodReadyToStartContainers {
+		if conditionType == v1.PodReadyToStartContainers {
 			return true
 		}
 	}

pkg/kubelet/types/pod_status_test.go

@@ -34,7 +34,7 @@ func TestPodConditionByKubelet(t *testing.T) {
 		v1.PodReady,
 		v1.PodInitialized,
 		v1.ContainersReady,
-		PodReadyToStartContainers,
+		v1.PodReadyToStartContainers,
 	}
 
 	for _, tc := range trueCases {

staging/src/k8s.io/api/core/v1/types.go

@@ -2866,6 +2866,9 @@ const (
 	// DisruptionTarget indicates the pod is about to be terminated due to a
 	// disruption (such as preemption, eviction API or garbage-collection).
 	DisruptionTarget PodConditionType = "DisruptionTarget"
+	// PodReadyToStartContainers pod sandbox is successfully configured and
+	// the pod is ready to launch containers.
+	PodReadyToStartContainers PodConditionType = "PodReadyToStartContainers"
 )
 
 // These are reasons for a pod's transition to a condition.

test/e2e_node/pod_conditions_test.go

@@ -30,7 +30,6 @@ import (
 	"k8s.io/apimachinery/pkg/fields"
 	"k8s.io/apimachinery/pkg/util/uuid"
 	"k8s.io/kubernetes/pkg/kubelet/events"
-	kubetypes "k8s.io/kubernetes/pkg/kubelet/types"
 	"k8s.io/kubernetes/test/e2e/framework"
 	e2eevents "k8s.io/kubernetes/test/e2e/framework/events"
 	e2epod "k8s.io/kubernetes/test/e2e/framework/pod"
@@ -41,6 +40,7 @@ import (
 	kubeletconfig "k8s.io/kubernetes/pkg/kubelet/apis/config"
 
 	"github.com/onsi/ginkgo/v2"
+	"github.com/onsi/gomega"
 )
 
 var _ = SIGDescribe("Pod conditions managed by Kubelet", func() {
@@ -113,7 +113,7 @@ func runPodFailingConditionsTest(f *framework.Framework, hasInitContainers, chec
 
 		// Verify PodReadyToStartContainers is not set (since sandboxcreation is blocked)
 		if checkPodReadyToStart {
-			_, err := getTransitionTimeForPodConditionWithStatus(p, kubetypes.PodReadyToStartContainers, false)
+			_, err := getTransitionTimeForPodConditionWithStatus(p, v1.PodReadyToStartContainers, false)
 			framework.ExpectNoError(err)
 		}
 
@@ -125,9 +125,7 @@ func runPodFailingConditionsTest(f *framework.Framework, hasInitContainers, chec
 			// Verify PodInitialized is set if init containers are not present (since without init containers, it gets set very early)
 			initializedTime, err := getTransitionTimeForPodConditionWithStatus(p, v1.PodInitialized, true)
 			framework.ExpectNoError(err)
-			if initializedTime.Before(scheduledTime) {
-				framework.Failf("pod without init containers is initialized at: %v which is before pod scheduled at: %v", initializedTime, scheduledTime)
-			}
+			gomega.Expect(initializedTime.Before(scheduledTime)).NotTo(gomega.BeTrue(), fmt.Sprintf("pod without init containers is initialized at: %v which is before pod scheduled at: %v", initializedTime, scheduledTime))
 		}
 
 		// Verify ContainersReady is not set (since sandboxcreation is blocked)
@@ -164,47 +162,33 @@ func runPodReadyConditionsTest(f *framework.Framework, hasInitContainers, checkP
 		condBeforeContainersReadyTransitionTime := initializedTime
 		errSubstrIfContainersReadyTooEarly := "is initialized"
 		if checkPodReadyToStart {
-			readyToStartContainersTime, err := getTransitionTimeForPodConditionWithStatus(p, kubetypes.PodReadyToStartContainers, true)
+			readyToStartContainersTime, err := getTransitionTimeForPodConditionWithStatus(p, v1.PodReadyToStartContainers, true)
 			framework.ExpectNoError(err)
 
 			if hasInitContainers {
 				// With init containers, verify the sequence of conditions is: Scheduled => PodReadyToStartContainers => Initialized
-				if readyToStartContainersTime.Before(scheduledTime) {
-					framework.Failf("pod with init containers is initialized at: %v which is before pod has ready to start at: %v", initializedTime, readyToStartContainersTime)
-				}
-				if initializedTime.Before(readyToStartContainersTime) {
-					framework.Failf("pod with init containers is initialized at: %v which is before pod has ready to start at: %v", initializedTime, readyToStartContainersTime)
-				}
+				gomega.Expect(readyToStartContainersTime.Before(scheduledTime)).ToNot(gomega.BeTrue(), fmt.Sprintf("pod with init containers is initialized at: %v which is before pod has ready to start at: %v", initializedTime, readyToStartContainersTime))
+				gomega.Expect(initializedTime.Before(readyToStartContainersTime)).ToNot(gomega.BeTrue(), fmt.Sprintf("pod with init containers is initialized at: %v which is before pod has ready to start at: %v", initializedTime, readyToStartContainersTime))
 			} else {
 				// Without init containers, verify the sequence of conditions is: Scheduled => Initialized => PodReadyToStartContainers
 				condBeforeContainersReadyTransitionTime = readyToStartContainersTime
 				errSubstrIfContainersReadyTooEarly = "ready to start"
-				if initializedTime.Before(scheduledTime) {
-					framework.Failf("pod without init containers initialized at: %v which is before pod scheduled at: %v", initializedTime, scheduledTime)
-				}
-				if readyToStartContainersTime.Before(initializedTime) {
-					framework.Failf("pod without init containers has ready to start at: %v which is before pod is initialized at: %v", readyToStartContainersTime, initializedTime)
-				}
+				gomega.Expect(initializedTime.Before(scheduledTime)).NotTo(gomega.BeTrue(), fmt.Sprintf("pod without init containers initialized at: %v which is before pod scheduled at: %v", initializedTime, scheduledTime))
+				gomega.Expect(readyToStartContainersTime.Before(initializedTime)).NotTo(gomega.BeTrue(), fmt.Sprintf("pod without init containers has ready to start at: %v which is before pod is initialized at: %v", readyToStartContainersTime, initializedTime))
 			}
 		} else {
 			// In the absence of PodHasReadyToStartContainers feature disabled, verify the sequence is: Scheduled => Initialized
-			if initializedTime.Before(scheduledTime) {
-				framework.Failf("pod initialized at: %v which is before pod scheduled at: %v", initializedTime, scheduledTime)
-			}
+			gomega.Expect(initializedTime.Before(scheduledTime)).NotTo(gomega.BeTrue(), fmt.Sprintf("pod initialized at: %v which is before pod scheduled at: %v", initializedTime, scheduledTime))
 		}
 		// Verify the next condition to get set is ContainersReady
 		containersReadyTime, err := getTransitionTimeForPodConditionWithStatus(p, v1.ContainersReady, true)
 		framework.ExpectNoError(err)
-		if containersReadyTime.Before(condBeforeContainersReadyTransitionTime) {
-			framework.Failf("containers ready at: %v which is before pod %s: %v", containersReadyTime, errSubstrIfContainersReadyTooEarly, initializedTime)
-		}
+		gomega.Expect(containersReadyTime.Before(condBeforeContainersReadyTransitionTime)).NotTo(gomega.BeTrue(), fmt.Sprintf("containers ready at: %v which is before pod %s: %v", containersReadyTime, errSubstrIfContainersReadyTooEarly, initializedTime))
 
 		// Verify ContainersReady => PodReady
 		podReadyTime, err := getTransitionTimeForPodConditionWithStatus(p, v1.PodReady, true)
 		framework.ExpectNoError(err)
-		if podReadyTime.Before(containersReadyTime) {
-			framework.Failf("pod ready at: %v which is before pod containers ready at: %v", podReadyTime, containersReadyTime)
-		}
+		gomega.Expect(podReadyTime.Before(containersReadyTime)).NotTo(gomega.BeTrue(), fmt.Sprintf("pod ready at: %v which is before pod containers ready at: %v", podReadyTime, containersReadyTime))
 	}
 }